Hi- You might check w/ Tom Hanson @ Caliber. Sometimes you can be surprised at what's available. If unavailable or too pricey, you might consider using a cardboard material auto interior people use. The modern stuff is pretty durable & relatively waterproof. You can use the old as a pattern. My 230SL panels have a VERY faint embossed leather graining, but the replacement paneling I've seen does not. If this essential for a show car, you can easily cover with a grained vinyl; if not a show car, nobody will notice/care. I think I still have a piece of the kick panel from replacing those on my Ponton several years ago. If you want to see a sample let me know & I can send you a piece. -JP-